Slits for Monochromators and Spectrographs

To operate any monochromator or spectrograph, slits are required at all entrance and exit ports. The slits offered for use with Oriel^® monochromators and spectrographs all have 1.5-inch male flanges, allowing them to be easily connected to the wide variety of Oriel accessories and instruments. The resolution of the monochromator is related to the grating dispersion and the slit width, and is calculated to be the reciprocal dispersion multiplied by the slit width.

Fixed Slits for High Accuracy and Repeatability
Micrometer Adjustable Slits for Flexibility and High Throughput
Motorized Slits for Automated Applications (CS260B Exclusive)

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Showing 10 of 26 total products

Compatibility:

Description	Compatibility	Slit Width	Slit Height	Avail.	Price
74001Micrometer Driven Slit Assembly, Monochromators and Spectrographs	UNIVERSAL	4-3000 µm	3-12 mm		$985
74115BMotorized Driven Slit Assembly, CS260B Monochromators	UNIVERSAL	6 µm to 3 mm	15 mm	Contact Us
77294Fixed Slit Holder, Monochromators and Spectrographs	UNIVERSAL				$250
77721Fixed Slit Holder, MS257	UNIVERSAL				$445
77211Fixed Slit, 6.32 mm Width, 18 mm Height	UNIVERSAL	6320 µm	18 mm		$200
77212Fixed Slit, 3.16 mm Width, 18 mm Height	UNIVERSAL	3160 µm	18 mm		$200
77213Fixed Slit, 1.56 mm Width, 18 mm Height	UNIVERSAL	1560 µm	18 mm		$190
77214Fixed Slit, 1240 µm Width, 18 mm Height	UNIVERSAL	1240 µm	18 mm		$200
77215Fixed Slit, 760 µm Width, 18 mm Height	UNIVERSAL	760 µm	18 mm		$190
77216Fixed Slit, 600 µm Width, 18 mm Height	UNIVERSAL	600 µm	18 mm		$205

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Features

Fixed slits for high accuracy and repeatability

Fixed slits are a low cost alternative with excellent repeatability and are a good choice when only a few slit sizes are required. Avaialble in widths from 10 µm to 6.3 mm, they slide into the holders at all instrument ports, with the exception of those ports configured to mount a camera. The slit holders are installed by Newport during calibration of the instrument. The width and height cannot be adjusted but may be individually replaced with other slit sizes. These fixed slits are sold separately to allow customized choices based on the needs of the application. When ordering, be sure to purchase fixed slits of the same model (i.e. same size) for the input port and output port(s). Each of the fixed slits is mounted in a precision machined slide which is inserted into the 77294 or 77721 fixed slit holder. Contact us for more information.

Motorized slits for remote and automated applications

Exclusive to the CS260B monochromators, the may be adjusted from 6 µm to 3 mm width in 6 µm steps. The slit width is controlled through the utility software, optional hand controller, optional TracQ Basic software or by using low level commands. An advantage of using motorized slits is that in addition to setting the individual slit widths remotely, the software can be configured to an automatic bandpass setting. The software adjusts the slit widths to maintain the chosen bandpass as scans are performed using multiple gratings and either output port. Motorized slits are only available on special order configuration Cornerstone 260B monochromators. Contact your Newport sales representative for more information.

Micrometer adjustable slits for flexibility and high throughput

A micrometer adjustable slit assembly provides versatility and convenience in changing resolution and throughput. They are ideal when the utmost accuracy and repeatability is required, especially at high resolution. These adjustable slits are continuously variable from fully closed to 3 mm width, with a narrowest practically achievable width of 4 µm. (Note that optimum spectral resolution for any monochromator is obtained with short, narrow slits.) A height adjustment slide allows variation in the height from 2 to 12 mm.

Motorized slits for computer control, automatic bandwidth selection

A motor driven slit assembly is offered for the MS257 which may be adjusted from 4 µm to 2 mm width in 2-µm steps. The slit width is controlled through the utility software, optional , optional or by using low level commands. An advantage of using motorized slits is that in addition to setting the slit widths individually, the software can be configured to an automatic bandpass setting. The software adjusts the slit widths to maintain the chosen bandpass as scans are performed using multiple gratings and either output port. If transitioning to a motorized slit assembly, factory recalibration service is recommended.